. they reportedly came from a region near chechnya. the 19-year-old, dzhokhar tsarnaev, lived in cambridge. he had a scholarship toward college a couple of years ago. his brother, tamerlan tsarnaev, died after a firefight with police friday morning. he was worn in russia and became a legal resident in 2007. the prayer -- the brothers are believed to have entered the country 10 years ago. the associated press spoke to the father. he said i son is an angel. he said he is an intelligent boy. confirms the worst fears of those responsible for national security. there are enemies among us. >> i agree. a moreard to imagine more american place to hit in this vicious and cowardly act. i think the political implications of it are immediate. there will be a great resistance to immigration reform. i think it is a blow there. beyond that, it is a reminder that since september 11, there has not been a terrorist attack in this country organized from abroad by foreign nationals. this may be a break. >> all right. we have a long way to go on what the motivation was and whether there is an international connection.